120 GENERAL INDEX TO EOYAL AGRICULTURAL JOURNAL. 



tive, but ammonia not all available, 567 ; 

 table of aftergrass and sheep-feed cal- 

 culated as hay, 5G9 ; aftergrass increased 

 by artificial manm'es, 570 ; in the fore- 

 going experiments the second croj) re- 

 turned to the laud by feeding, 571 ; 

 practical conclusions, 573 ; bones only 

 suited to special localities, ib. ; salts of 

 potash too dear for general use, ib. ; 

 guano witli nitrate of soda a good 

 dressing, ib. ; Ix-nefits resulting from 

 dung ai^plied at intervals,/?). — Part II. 

 Produce of constituents per acre, xx. 

 229 ; tables showing amount of hay, 

 of dry substance, of mineral matter, and 

 of nitrogen per acre, and proportion of 

 nitrogen recovered and not recovered, 

 231-23G; the dry niattLi- — uuiuanured, 

 1 ton per acre, with manure, up t^ 2J 

 tons, 230 ; carbon in hay 40 per cent., 

 ib. ; direct supply not required, espe- 

 cially for graminea3, and increase of 12 

 per cent, gained, 237 ; more mineral 

 matter in hay than in corn crop, eitlier 

 vmmanured or with ammonia only, 238; 

 farmyard manure slow of action, ib. ; 

 potash especially exhausted on meadow, 

 ib.; nitrogen in unmanured hay more 

 than in com crop, 239 ; legumiiiosaj 

 fostered by minerals gave yet more 

 nitrogen, ib. ; double standard of com- 

 parison, either immanured plot or mixed 

 mineral manures, 240; the first pre- 

 fen-ed, ib. ; the increase of nitrogen in 

 produce assumed to be entirely due to 

 the artificial supply — certainty unat- 

 tainable, 241 ; when combined with 

 minerals, an average of 48 per cent., 

 243 ; excess of ammonia gave high jier ■ 

 centage of nitrogen in produce, a ques- 

 tionable advantage, 243 ; but little more 

 nitrogen recovered in hay than in corn 

 crop, 244 ; probable causes of loss of 

 nitrogen, ib.; gi-amineaj require avail- 

 able nitrogen within the soU, 245; 

 recapitulation, ib. — Part III. Plants 

 developed by different manures, 24G ; 

 distinctive character of herbage, 247 ; 

 mode of taking samples with Dr. Pugh's 

 aid, ib. ; tabular list of plants, the per- 

 centage of each on selected plots, and 

 remarks on their growtli, 250; sum- 

 maiy of preceding table, 252 ; rye-grass, 

 how affected by manures, minerals pro- 

 moted, ammonia checked, seeding, 253 ; 

 Holcus L., woolly soft grass much in- 

 creased, especially in leaf, by niti-ogen, 

 255 ; the grass of bad repute and should 

 be excluded from seeds, ib. ; Arrheena- 

 iherum ^., oatlike grass, of early growth, 

 promoted by minerals, 255 ; Anthovan- 



thum 0., sweet vernal grass, of doubtful 

 advantage, discouraged by artificials, 

 256; Aijrostis V., bent grass, and Briza 

 ilf., common quaking grass, discomuged 

 by manures, 257 ; Cynosurus C, crested 

 dogstail grass, dies out under manures, 

 258 ; Dactylis (?., rough cockslbot, fos- 

 tered by excess of ammonia, ib. ; Foa P., 

 smooth-stalked meadow-grass, brought 

 out by farmyard manure, with ammonia 

 overpowered, 259; Bromus M., soft or 

 downy brome grass, to be avoided, put 

 little forward by manure, 260; Avena 

 P., meadow oat-grass, put little forward 

 by manure, 261 ; overdi-essings detri- 

 mental to herbage, ib. Leguminous 

 herbage. Vetclies, trefoil, and clover, in- 

 creased by minerals l.")-lol(l, diminished 

 by ammonia, 262. Miscillaiteous herb- 

 age. Plantugo L., rib grass or plantain, 

 diminished by all the dressings, 264 ; 

 Carum C, common caraway, diminished 

 or excludt'd by artificials, ib. ; Achilhea 

 M., Yarrow or Milfoil, favoiu'cd by am- 

 monia, ib. ; liumex. A., sorrel or dock, 

 favoured by manuring, but objection- 

 able, 265 ; ranunculus, crowfoot, and 

 other plants, decrea.sed by large dress- 

 ings, ib.; most weeds on unmanured i)lot.s, 

 and next on plots dresseil with farm- 

 yard manure and ammonia, 266 ; total 

 percentage of grasses and results with 

 dittercnt manures, 2(17 ; percentage of 

 legumes, 269 ; the difierences in the re- 

 quirements of grasses and legumes too 

 broad to be explained by local accident, 

 270; the action of a manure on any 

 given plant in a complex herbage con- 

 sidered, 271 ; recapitulation, 272 ; hay, 

 its comjwsition, 399; varying proportions 

 of grasses and legumes, 399 ; dry matter 

 table, 401 ; its percentage lowered by 

 anuuoniacal salts, 402; the mineral 

 matter increases with ripeness, 403 ; 

 table of percentages, 404 ; the seasons 

 1856, 1857, and 1858, 405; the direct 

 supply of minerals told on the results, 

 but the effects were complex, 406 ; de- 

 tailed composition of the ash, 407 ; 

 total amount removed per acre on se- 

 lected ])lots, ib. ; table of percentage 

 composition of the ash, 408 ; potash, its 

 primary importance, 409 ; the increased 

 drain of, in crop, when supplied in ma- 

 manm-e, ib. ; likewise increased per- 

 centage as compared with soda, lime, 

 magnesia, ib. ; phosphoric and carbonic 

 acid and silica required by grasses as 

 they ripen, 410 ; the natural supply was 

 defective, its amount in late crops was 

 doubled, whilst potash was quadrupled. 



